<template>
  <div>
    <!-- 面包屑导航-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片试图 -->
    <el-card>
      <!--2. 为ECharts准备一个具备大小 的Dom -->
      <div id="main" style="width: 600px; height: 400px"></div>
    </el-card>
  </div>
</template>

<script>
//1.导入 echarts
import*as echarts from "echarts"

import _ from 'lodash'
export default {
  props: {},
  data() {
    return {
         // 需要合并的鼠标跟随
      options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
    }
    
  },
  created() {},
  //此时，页面的元素，已经被渲染完毕了
  async mounted() {
    //3.基于准备好的dom,初始化echarts实列
    var myChart = echarts.init(document.getElementById("main"))

    const{data:res}= await this.$http.get('reports/type/1')
    if (res.meta.status !==200) {
        return this.$message.error('获取折线图数据失败！')
    }

    //4.准备数据和配置项
   const result= _.merge(res.data,this.options)

    //5.展示数据
    myChart.setOption(result)
  },
  methods: {},
  components: {},
}
</script>

<style scoped lang="less">
</style>